G-Shock Premium Master of G-Air Gravitymaster Series Mens Watch GA1000-4B. Case size 50.8 x 52.1 with a thickness of 16.9mm. WR rating of 200m. Battery Quartz model. Spherical Mineral Glass. Resin & Stainless Steel finish. Approximate weight of 90gm.

Bold, rugged, and built for adventure, the Casio G-Shock GA-1000-4B is designed for those who demand performance in extreme conditions. Part of the Master of G Aviation Series, this watch combines advanced functionality with signature G-Shock toughness. Featuring Twin Sensor technology, it offers digital compass and thermometer readings on demand—ideal for pilots, explorers, and outdoor enthusiasts. The striking red and black colour scheme makes a bold style statement, while the large 52mm case ensures visibility even in low light, thanks to the high-brightness LED backlight and Neobrite luminescent hands.

With shock resistance, 200-meter water resistance, world time, stopwatch, countdown timer, and 5 daily alarms, the GA-1000-4B is a watch engineered for serious use. Built to withstand the harshest environments while offering a standout aesthetic, the GA-1000-4B is a must-have for anyone who values durability, precision, and bold design. Perfect for professionals and G-Shock collectors alike.

Ships in 1-3 Business Days from Sydney with Australia Post Express. Sydney customers can pick up on the same day from our Alexandria showroom an hour after placing the order by choosing Click & Collect as the delivery option. 

2 year Australian warranty from Shriro Australia. StarBuy are Authorised online and instore stockists of Casio G-Shock Watches. All Casio G-Shock Watches are shipped with local and an international manufacturers warranty and in G-Shock original packaging.